Kathirgamanathan, A, Péan, T., Zhang, K., De Rosa, M., Salom, J., Kummert, M., Finn, D.P. "Towards standardising market-independent indicators for quantifying energy flexibility in buildings" Energy and Buildings 220, pp. 110027 - 2020 DOI: 10.1016/j.enbuild.2020.110027